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Common Stock Repurchase Program (Detail) - Common Stock [Member] - USD ($)	9 Months Ended
	Jan. 26, 2025	Jan. 28, 2024	Mar. 31, 2020
Stockholders Equity Note [Line Items]
Common stock repurchased	0	0
Remaining authorized repurchase amount	$ 3,200,000
Stock Repurchase Program March 2020 [Member]
Stockholders Equity Note [Line Items]
Authorization amount for repurchase of common stock			$ 5,000,000

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

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Number of shares that have been repurchased and retired during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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